What is the maximum rpm?

According to 3M's website, the Max RPM is 20375.

Is this a package of 5 for 19.99 or a sigle disc?

There are 5 wheels per pack @ $5 per pack.

What shank is used with these wheels.?

1/4" drive mandrel for 1/4" chuck tool, 3/8 "adapter" for the wheel center. There is a procedure to center the wheel, the center is not totally snug.

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Description

⚡ Cut fast, last longer — the pro’s choice for weld grinding!

PRECISION FIT - 3/8-inch center hole ensures secure attachment to most right-angle and straight-shaft grinders.
FAST RELIABLE - Resin-bonded abrasive delivers rapid material removal for collision repair pros.
UNMATCHED DURABILITY - Fiberglass reinforcement scrim extends wheel life under heavy-duty weld grinding.
VERSATILE PERFORMANCE - Cuts through aluminum, carbon steel, and titanium with heat-resistant aluminum oxide grit.
INDUSTRIAL GRADE POWER - Rated for up to 20,375 RPM to handle the toughest grinding tasks without compromise.

The 3M Green Corps Reinforced Weld Grinding Wheel 01991 is a heavy-duty, 3-inch diameter grinding wheel designed for industrial weld removal and surface prep. Featuring a fiberglass scrim for enhanced strength and a heat-resistant aluminum oxide abrasive, it delivers fast, reliable cutting on metals like aluminum, carbon steel, and titanium. Compatible with common angle grinders and rated for speeds up to 20,375 RPM, this resin-bonded wheel is engineered for long-lasting performance in demanding collision repair environments.

Specifications

Grit Material	Aluminum Oxide
Product Dimensions	3"L x 3"W
Brand	3M
Compatible Devices	Angle Grinder
Grit Type	Medium
Grit Number	60
Construction Type	Bonded
Maximum Rotational Speed	20375 RPM
Global Trade Identification Number	00051131019911
UPC	511310199044 051131019911 749783512361
Manufacturer	3M
Part Number	01991
Item Weight	2.08 ounces
Item model number	01991
Is Discontinued By Manufacturer	No
Size	One Size
Color	Green
Material	Aluminum Oxide
Item Package Quantity	1
Cutting Diameter	3 Inches
Included Components	Abrasives
Batteries Included?	No
Batteries Required?	No
Warranty Description	Call vendor for warranty
Assembled Diameter	3 Inches

Reviews

P**R

wheel use

best weld bead grinding wheel i have ever used .cuts quick with very little wear. been doing patch panels on restoration

18.12.2020

B**R

Great product!

They worked great.

29.08.2025

W**L

Weld grinding wheel

This product does real well. Makes quick work of grinding down welds

18.01.2023

S**G

Best there is

Great product

26.06.2023

R**.

Pricey but they work awesome

Great product , it’s 3M which I believe translates to three times the price . But it works well so I can’t complain . Sure I can buy cheaper , and change them out 4 or 5 more times .

22.03.2022

C**Y

Picture is not actual product

The picture advertises the older green corps wheels which are better than the new reinforced silver ones. These are the silver ones, not the older wheels shown.

30.10.2024

E**O

I wish i had discovered these thing sooner!

These are the trick for grinding down welds on auto panel repair.. The are super agressive so they make quick work of the welds but offer a ton of control so you can make sure your removing the weld and not too much material from the panel itself... If you've been sing 2 and 3" sanding pads to knock welds down stop wasting your time and damaging your panels..

17.05.2021

A**R

Product changed,,,,but not the number and price!!!

3M changed this product..for the worse but kept the same product number and price. It did have different packaging. It is very inferior to their previous version of .01991, It did not last long. I will never purchase this again

17.01.2022

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